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Update one MySQL table with values from another
...l named key such as id. ie an equi-join - http://en.wikipedia.org/wiki/Join_(SQL)#Equi-join
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Using System.Dynamic in Roslyn
...sions, System.Private.CoreLib, System.Runtime and Microsoft.CSharp, all as strings
– Simon Mourier
Aug 22 '18 at 13:15
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How to create a file in Ruby
...
Use:
File.open("out.txt", [your-option-string]) {|f| f.write("write your stuff here") }
where your options are:
r - Read only. The file must exist.
w - Create an empty file for writing.
a - Append to a file.The file is created if it does not exist.
r+ ...
Is MD5 still good enough to uniquely identify files?
...sions before storing the value.
I personally like to create md5 of random strings, which reduces the overhead of hashing large files. When collisions are found, I iterate and re-hash with the appended loop counter.
You may read on the pigeonhole principle.
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rails 3 validation on uniqueness on multiple attributes
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In Rails 2, I would have written:
validates_uniqueness_of :zipcode, :scope => :recorded_at
In Rails 3:
validates :zipcode, :uniqueness => {:scope => :recorded_at}
For multiple attributes:
validates :zipcode, :uniqueness => {:scope => [:recorded_at...
Get first day of week in PHP?
...gt;format('m-d-Y');
}
var_dump(firstDayOfWeek('06-13-2013'));
Output:-
string '06-10-2013' (length=10)
This will deal with year boundaries and leap years.
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Handling colon in element ID with jQuery
...z" and thus fail.
//You would first have to look for ":" in the id string, then replace it
var jEle = $(document.getElementById(id)); //forget about the fact
//that the id string might contain ':', this always works
}
//just to give an idea that the ID might be coming...
Change Checkbox value without triggering onCheckChanged
...derstandability. But if its all contained to a single class a few comment strings will be more than enough to explain whats happening.
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PHP filesize MB/KB conversion [duplicate]
...Formats filesize in human readable way.
*
* @param file $file
* @return string Formatted Filesize, e.g. "113.24 MB".
*/
function filesize_formatted($file)
{
$bytes = filesize($file);
if ($bytes >= 1073741824) {
return number_format($bytes / 1073741824, 2) . ' GB';
} elsei...
jQuery animate backgroundColor
.../ By Blair Mitchelmore
// http://jquery.offput.ca/highlightFade/
// Parse strings looking for color tuples [255,255,255]
function getRGB(color) {
var result;
// Check if we're already dealing with an array of colors
if ( color && color.constructor == Array &&...